Saturday, September 13, 2008

Detailed Study on Spread of H.I.V. in U.S.

via The New York Times

An unusually detailed study of people newly infected with H.I.V. in the United States has confirmed that the majority of new cases occur among gay and bisexual men and that blacks are most at risk. But the data show that whites and blacks tend to be infected at different times in their lives with the virus that causes AIDS.

Most new infections of white gay and bisexual men occur when the men are in their 30s and 40s, the study found, while black gay and bisexual men are more likely to be infected in their teens and 20s. The results were reported on Thursday by the Centers for Disease Control and Prevention.

The C.D.C. reported last month that the study found that the virus was spreading faster in the United States than had been thought. In 2006, the study found, 56,300 people were newly infected with H.I.V. — 40 percent more than the agency’s previous estimate of roughly 40,000 new cases a year. The study was performed using new technology that allowed researchers to distinguish between new and older infections.

Dr. Kevin Fenton of the C.D.C. said the study’s findings served “as a powerful reminder that the U.S. epidemic of H.I.V. disease is far from over.

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